Konstadinos (Kostas) Goulias is a professor of transportation in the Geography Department at the University of California Santa Barbara and co-director of the GeoTrans laboratory. From 1991 to 2004, he was a professor of transportation in the Department of Civil Engineering at PennState where he was also director of different research units. He served as chair of the Traveler Behavior and Values Committee (now serving as emeritus member) and chair of the Task Force on Moving Activity-based Approaches to Practice both of the Transportation Research Board of the National Academies in the United States. He edited three books, authored and co-authored more than 270 papers and reports to sponsor, and serves on a variety of editorial and research boards, peer review panels, and committees. He is also co-founding editor (with Kouros Mohammadian) of the journal Transportation Letters. Kostas has a Laurea in Engineering degree (5 years and a thesis) from University of Calabria in Italy (1986), MS in Engineering from University of Michigan, Ann Arbor (1987), and Ph.D. from University of California at Davis (1991). Most of his research is in travel behaviour dynamics and microsimulation.